esr/nmr basic set

This ESR/NMR Basic Equipment Set is intended for investigating the electron spin resonance (ESR) of an unpaired electron of a DPPH sample. It is also used for investigating the nuclear magnetic resonance (NMR) of glycerin, Teflon, and polystyrene.

Resonances are observed via transitions induced through high frequencies resulting from changes in the external magnetic field. Resonance absorption curves can be represented with a simple dual-channel oscilloscope or with the 3B NETlog unit.

The basic unit consist of a mechanical base for test samples, as well as ESR or NMR probes, a coil pair and a permanent magnet. The coil pair is used to generate the variable magnetic field for electron spin resonance and, in conjunction with the permanent magnet, nuclear spin resistance.

The control console provides the voltage for control and supply of power to probes and the coil pair. It also processes the signal for display on an oscilloscope and indicates the frequency of the high-frequency signal. 

contents

The ESR/NMR Basic Set consists of the following:

• 1 x Basic unit
• 1 x Pair of coils
• 1 x Control panel
• 1 x Plug-in power supply, 12V AC (230V, 50/60Hz)

or:

• 1 x Plug-in power supply 12V Ac (115V, 50/60Hz)

experiment topics

The ESR/NMR Basic Set can be used to support the following experimental topics:

• Resonance absorption of a high frequency oscillating circuit
• Dependence of resonance frequency on magnetic fields
• Line width
• Electron spin
• Magnetic moment of an electron
• Determination of the electron g factor
• Proton spin
• Magnetic moment of a proton and nucleus
• Determination of the nucleus g factor
• Nuclear-spin tomography

required equipment

To use your ESR/NMR Basic Set you will need:

• ESR Supplementary Set 

or:

• NMR Supplementary Set

• Analogue Oscilloscope 2 x 30MHz

or:

• 3B NETlog 230V, 50/60Hz 

or:

• 3B NETlog 115, 50/60Hz

technical specification

Basic unit

• Dimensions: approx. 165 x 105 x 135mm²
• Weight: approx. 1.25kg

Coil pair

• Dimensions: approx. each 20 x 74mm diam.
• Weight: approx. each 0.2kg
• Magnetic flux density: 0 - 3.7mT
• Connection: barrel connector

Control console

• Dimensions: approx. 170 x 105 x 45mm³
• Weight: approx. 0.5kg
• Probe connection: four-pin Lemo socket
• Coil pair connection: saw-tooth current source, 0 - 250mA, 50ms, pair of barrel sockets
• Field output: proportional to coil current, 0 to 1V, BNC socket
• Signal output: resonance signal, 0 to 1V, BNC socket
• Frequency range: approx. 45 - 75MHz (ESR), approx. 10 - 15MHz (NMR)